Revert "[lldb][lit] Add MallocNanoZone envvar to Darwin ASan builds" (#88436)

Reverts llvm/llvm-project#88431. A config variable for the host OS is
unrecognized on the Linux builds and is causing a build failure.

GitOrigin-RevId: 1f5d130df85c2d0550dc8687ad0fa1d96856c318
2 files changed